Changes

The participant in the center of the circle, or caller, announces "The North Wind blows for anyone who"...followed by a particular characteristic that the caller shares. Ex: "The North Wind blows for on anyone who has more than one sibling" A personal favorite of mine is "The North Wind blows on anyone who has played this game in a language aside from English". Everyone to whom that characteristic applies then runs into the circle and switches places with someone else from the circle who also shares that characteristic. The caller must also find a place in the circle, and whoever is left without a place becomes the new caller. It's very easy for this game to become mundane (eg, TNWB for anyone who's wearing jeans, has glasses, etc.) so encourage participants to be creative and unique.